I would recommend making your own post to get more help. On the cad side of things the alternatives are free cad, on shape, or blender; I don’t have that much experience with them, but just based on my fusion experience, I would assume they can all do the same things, just in completely different ways since fusion had it’s own special way for literally everything.

I second this, endeavor is for all intents and purposes exactly arch with some extra branding, but what I really like about it is that their community forums are great, so if I run into a problem I can ask in endeavor forums, and if they don’t have a solution I can ask the tech gurus on the arch wiki as well.

I wouldn’t say so, for most people what you have done is good enough. However there may come a time where you have to do something janky, at that point you’ll probably wish you were on a different distro, but for 95% of people, they will never run into any issues with mint.